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From: "lhyatt at gmail dot com" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug c++/58725] New: g++ segfault with non-static member initializer in a nested struct Date: Mon, 14 Oct 2013 15:23:00 -0000 [thread overview] Message-ID: <bug-58725-4@http.gcc.gnu.org/bugzilla/> (raw) http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58725 Bug ID: 58725 Summary: g++ segfault with non-static member initializer in a nested struct Product: gcc Version: 4.8.1 Status: UNCONFIRMED Severity: major Priority: P3 Component: c++ Assignee: unassigned at gcc dot gnu.org Reporter: lhyatt at gmail dot com The short code below that involves a non-static member initializer in a class nested in a template class nested in another class causes g++ to segfault. Seems to require this particular combination of features. It crashes with or without -std=c++11. (Without -std=c++11 it notes the error, but then crashes after.) and independent of optimization level. Output below is with -std=c++11. t.cpp ----- struct A { //only happens if B is wrapped in another struct template<int=0> //only happens if B is a template struct B { struct C { int x = 0; double y = x; //this line must be present to produce the problem } c; //only happens if B contains a C object }; }; int main() { A::B<>(); } ------ $ g++ -v -save-temps -std=c++11 t.cpp Using built-in specs. COLLECT_GCC=/usr/local/gcc48/bin/g++ COLLECT_LTO_WRAPPER=/usr/local/gcc-4.8.1/libexec/gcc/x86_64-unknown-linux-gnu/4.8.1/lto-wrapper Target: x86_64-unknown-linux-gnu Configured with: ./configure --enable-threads=posix --enable-__cxa_atexit --prefix=/usr/local/gcc-4.8.1 Thread model: posix gcc version 4.8.1 (GCC) COLLECT_GCC_OPTIONS='-v' '-save-temps' '-std=c++11' '-shared-libgcc' '-mtune=generic' '-march=x86-64' /usr/local/gcc-4.8.1/libexec/gcc/x86_64-unknown-linux-gnu/4.8.1/cc1plus -E -quiet -v -D_GNU_SOURCE t.cpp -mtune=generic -march=x86-64 -std=c++11 -fpch-preprocess -o t.ii ignoring nonexistent directory "/usr/local/gcc-4.8.1/lib/gcc/x86_64-unknown-linux-gnu/4.8.1/../../../../x86_64-unknown-linux-gnu/include" #include "..." search starts here: #include <...> search starts here: /usr/local/gcc-4.8.1/lib/gcc/x86_64-unknown-linux-gnu/4.8.1/../../../../include/c++/4.8.1 /usr/local/gcc-4.8.1/lib/gcc/x86_64-unknown-linux-gnu/4.8.1/../../../../include/c++/4.8.1/x86_64-unknown-linux-gnu /usr/local/gcc-4.8.1/lib/gcc/x86_64-unknown-linux-gnu/4.8.1/../../../../include/c++/4.8.1/backward /usr/local/gcc-4.8.1/lib/gcc/x86_64-unknown-linux-gnu/4.8.1/include /usr/local/include /usr/local/gcc-4.8.1/include /usr/local/gcc-4.8.1/lib/gcc/x86_64-unknown-linux-gnu/4.8.1/include-fixed /usr/include End of search list. COLLECT_GCC_OPTIONS='-v' '-save-temps' '-std=c++11' '-shared-libgcc' '-mtune=generic' '-march=x86-64' /usr/local/gcc-4.8.1/libexec/gcc/x86_64-unknown-linux-gnu/4.8.1/cc1plus -fpreprocessed t.ii -quiet -dumpbase t.cpp -mtune=generic -march=x86-64 -auxbase t -std=c++11 -version -o t.s GNU C++ (GCC) version 4.8.1 (x86_64-unknown-linux-gnu) compiled by GNU C version 4.8.1, GMP version 4.3.2, MPFR version 2.4.2-p1, MPC version 0.8.1 GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072 GNU C++ (GCC) version 4.8.1 (x86_64-unknown-linux-gnu) compiled by GNU C version 4.8.1, GMP version 4.3.2, MPFR version 2.4.2-p1, MPC version 0.8.1 GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072 Compiler executable checksum: 9381368e685e312c931bb6a2db2d568c t.cpp: In constructor 'constexpr A::B<>::C::C()': t.cpp:4:16: internal compiler error: Segmentation fault struct C { ^ 0x89ffef crash_signal ../.././gcc/toplev.c:332 0x7276e5 size_binop_loc(unsigned int, tree_code, tree_node*, tree_node*) ../.././gcc/fold-const.c:1431 0x765476 gimplify_compound_lval ../.././gcc/gimplify.c:2267 0x761ad4 gimplify_expr(tree_node**, gimple_statement_d**, gimple_statement_d**, bool (*)(tree_node*), int) ../.././gcc/gimplify.c:7145 0x7631c6 gimplify_expr(tree_node**, gimple_statement_d**, gimple_statement_d**, bool (*)(tree_node*), int) ../.././gcc/gimplify.c:7804 0x76774f gimplify_modify_expr ../.././gcc/gimplify.c:4902 0x761fc9 gimplify_expr(tree_node**, gimple_statement_d**, gimple_statement_d**, bool (*)(tree_node*), int) ../.././gcc/gimplify.c:7193 0x763da6 gimplify_stmt(tree_node**, gimple_statement_d**) ../.././gcc/gimplify.c:5725 0x76181d gimplify_cleanup_point_expr ../.././gcc/gimplify.c:5501 0x76181d gimplify_expr(tree_node**, gimple_statement_d**, gimple_statement_d**, bool (*)(tree_node*), int) ../.././gcc/gimplify.c:7530 0x763da6 gimplify_stmt(tree_node**, gimple_statement_d**) ../.././gcc/gimplify.c:5725 0x761bdb gimplify_statement_list ../.././gcc/gimplify.c:1561 0x761bdb gimplify_expr(tree_node**, gimple_statement_d**, gimple_statement_d**, bool (*)(tree_node*), int) ../.././gcc/gimplify.c:7582 0x763da6 gimplify_stmt(tree_node**, gimple_statement_d**) ../.././gcc/gimplify.c:5725 0x764472 gimplify_bind_expr ../.././gcc/gimplify.c:1253 0x761a6a gimplify_expr(tree_node**, gimple_statement_d**, gimple_statement_d**, bool (*)(tree_node*), int) ../.././gcc/gimplify.c:7364 0x763da6 gimplify_stmt(tree_node**, gimple_statement_d**) ../.././gcc/gimplify.c:5725 0x76983d gimplify_body(tree_node*, bool) ../.././gcc/gimplify.c:8226 0x769a57 gimplify_function_tree(tree_node*) ../.././gcc/gimplify.c:8358 0x66e82f cgraph_analyze_function ../.././gcc/cgraphunit.c:658 Please submit a full bug report, with preprocessed source if appropriate. Please include the complete backtrace with any bug report. See <http://gcc.gnu.org/bugs.html> for instructions.
next reply other threads:[~2013-10-14 15:23 UTC|newest] Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top 2013-10-14 15:23 lhyatt at gmail dot com [this message] 2013-10-14 15:24 ` [Bug c++/58725] " lhyatt at gmail dot com 2013-10-14 15:25 ` lhyatt at gmail dot com 2013-10-14 15:58 ` paolo.carlini at oracle dot com 2013-11-15 23:33 ` [Bug c++/58725] " paolo.carlini at oracle dot com 2013-11-15 23:52 ` paolo at gcc dot gnu.org 2013-11-15 23:57 ` paolo.carlini at oracle dot com
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